Light bulb



FIG. 1 is a perspective view of a light bulb showing our new design;

FIG. 2 is a front view of the light bulb shown in FIG. 1;

FIG. 3 is a left side view of the light bulb shown in FIG. 1;

FIG. 4 is a right side view of the light bulb shown in FIG. 1;

FIG. 5 is a rear view of the light bulb shown in FIG. 1; and,

FIG. 6 is a bottom view of the light bulb shown in FIG. 1.

The broken lines shown in FIGS. 1-6 of the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a light bulb, as shown and described. 